Mk 9:14-29
14When [Jesus, Peter, James, and John] came to the [other] disciples, they saw a large crowd around them and scribes arguing with them. 15Immediately on seeing him, the whole crowd was utterly amazed. They ran up to him and greeted him. 16He asked them, “What are you arguing about with them?” 17Someone from the crowd answered him, “Teacher, I have brought to you my son possessed by a mute spirit. 18Wherever it seizes him, it throws him down; he foams at the mouth, grinds his teeth, and becomes rigid. I asked your disciples to drive it out, but they were unable to do so.” 19He said to them in reply, “O faithless generation, how long will I be with you? How long will I endure you? Bring him to me.”
